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In the ULP1 mode, in order to achieve the lowest power consumption with the system in retention mode and be able to resume on the wake up events, all the clocks are shut off, inclusive the embedded 12MHz RC oscillator, and the number of wake up sources is limited as well. When the wake up event is asserted, the embedded 12MHz RC oscillator restarts automatically. The ULP1 (Ultra Low-power mode 1) is introduced by SAMA5D2. The previous size of pm_suspend.o was 2148 bytes. With the addition of ULP1 mode the new size of pm_suspend.o raised at 2456 bytes. Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com> Signed-off-by: Ludovic Desroches <ludovic.desroches@microchip.com> [claudiu.beznea@microchip.com: aligned with 4.18-rc1] Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
44 lines
1014 B
C
44 lines
1014 B
C
/*
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* AT91 Power Management
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*
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* Copyright (C) 2005 David Brownell
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#ifndef __ARCH_ARM_MACH_AT91_PM
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#define __ARCH_ARM_MACH_AT91_PM
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#include <asm/proc-fns.h>
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#include <linux/mfd/syscon/atmel-mc.h>
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#include <soc/at91/at91sam9_ddrsdr.h>
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#include <soc/at91/at91sam9_sdramc.h>
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#define AT91_MEMCTRL_MC 0
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#define AT91_MEMCTRL_SDRAMC 1
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#define AT91_MEMCTRL_DDRSDR 2
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#define AT91_PM_STANDBY 0x00
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#define AT91_PM_ULP0 0x01
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#define AT91_PM_ULP1 0x02
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#define AT91_PM_BACKUP 0x03
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#ifndef __ASSEMBLY__
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struct at91_pm_data {
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void __iomem *pmc;
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void __iomem *ramc[2];
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unsigned long uhp_udp_mask;
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unsigned int memctrl;
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unsigned int mode;
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void __iomem *shdwc;
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void __iomem *sfrbu;
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unsigned int standby_mode;
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unsigned int suspend_mode;
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};
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#endif
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#endif
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